USB2228-NU-09 Standard Microsystems (SMSC), USB2228-NU-09 Datasheet - Page 13

• Manufacturer Part Number: USB2228-NU-09
• Manufacturer: Standard Microsystems (SMSC)

Specifications of USB2228-NU-09

• Lead Free Status / RoHS Status: Compliant

Revision 1.93 (11-01-07)
MS_SDIO/MS_
SD_DAT[3:0]
MS_D[3:2]
MS_SCLK
SYMBOL
SD_CMD
SD_CLK
MS_INS
MS_BS
MS_D1
D0
128-PIN
VTQFP
24
19
20
22
21
18
23
29
28
27
26
31
30
BUFFER
I/O8PD
I/O8PD
I/O8PD
I/O8PU
I/O8PU
TYPE
IPU
O8
O8
O8
MEMORY STICK INTERFACE
4th Generation USB 2.0 Flash Media Controller with Integrated Card Power FETs
DATASHEET
SD INTERFACE
MS Bus State:
This pin is connected to the BS pin of the MS device.
It is used to control the Bus States 0, 1, 2 and 3 (BS0, BS1, BS2
and BS3) of the MS device.
MS System Data In/Out:
This pin is a bi-directional data signal for the MS device.
Most significant bit (MSB) of each byte is transmitted first by
either MSC or MS device.
The bi-directional data signal has an internal weak pull-down
resistor.
MS System Data In/Out:
This pin is a bi-directional data signal for the MS device.
This pin has internally controlled weak pull-up and pull-down
resistors for various operational modes.
MS System Data In/Out:
This pin is a bi-directional data signal for the MS device.
The bi-directional data signal has an internal weak pull-down
resistor.
MS Card Insertion:
This pin is the card detection signal from the MS device to
indicate, if the device is inserted.
This pin has an internally controlled weak pull-up resistor.
MS System CLK:
This pin is an output clock signal to the MS device.
The clock frequency is software configurable.
SD Data 3-0:
These are bi-directional data signals.
These pins have internally controlled weak pull-up resistors.
SD Clock:
This is an output clock signal to SD/MMC device.
The clock frequency is software configurable.
SD Command:
This is a bi-directional signal that connects to the CMD signal of
SD/MMC device.
This pin has an internally controlled weak pull-up resistor.
13
DESCRIPTION
SMSC USB2227/USB2228
Datasheet